smith



2 Sheets-Sheet l.

G. J. SMITH.

Safety Stove.

Pafnsnted May 31, 1870.

I WITNES$ N.F'ETERS. PHOTOL|THOGRAFHER. WASHINGTONv D G- strut awe.

CHARLES J. SMITH, -OF NORFOLK, VIRGINIA.

Letters Patent No. 103,672, dated May 31, 1870.

SAFETY-STOVE.

The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern.-

Be it known that I, GHARLESJ. SMITH, of N or folk, in the county of Norfolk and State of Virginia, have invented certain new and useful Improvements in Safety-Stoves; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon making part of this specification, in which- Figure 1 is a top view of the combustion-chamber, with my improvements. v

Figure 2 is a vertical sectional view of my devicethrough the center of the same.

Figure 3 is a bottom view of the hollow cone, showing the metal guide-plate. a

Figure .4 is a top view of the perforated wroughtiron plate and hollow cone.

Figure 5 is a side view of my device.

Figure 6 is a vertical sectional view of my device through the center, the stove being represented as overturned.

Figure 7-is a front view of a stove with my improvement attached. I i

This invention is an improvement on Letters Patent .for safety-stoves granted me J one 29, 1869, No. 92,115, and has for its object the construction of the combustion-chamber in such manner that the outside casing or cylinder can never'attain a red heat, and should the stove by any means be overturned, the fire cannot escape, while, at the same time, sufficient draught is always afibrded to ignite the fueland keep the same in a state of combustion when desired.

.The natureof my invention consists in' securing within the combustion-chamber an inside casing of cast-iron or other suitable metal, so perforated "and arranged that, while suflicient heat is allowed to fill the space between it and the outer casing of the stove, and through this means communicate heat to the outside, still the outer casing will be prevented from ever becoming red hot. This inner casing is so arranged that the same door that answers for the outer casing will answer for this, and is supported in its position by a'hollow circular metallic disk or plate.

On top of this inner casing is placed a perforated wrought-ironplate, with a solid center, in which is securely fastened an upright rod.

\Vorking freely up anddown on this rod is a hollow cone, of suitable metal, provided with a curved projecting rim, and having a metallic guide-plate secured across the inside of the same and near its base.

In case the stove, of which this device is the com-.

To enable others skilled in theart to make and use my invention, I will now proceed to describe its construction and operation. s

A is the outer casing, which is conical in form, and constructed of the usual metal, having an opening, a,

for the purpose of replenishing the fuel.'when ne'cessary.

A is the inner casing, which is constructed of castiron, and has a circular sweep, as clearly shown in fig. 2.

This inner casing A has numerous perforations a a, and is provided with an opening corresponding with the opening a of the outer casing A.

The sides a a of this opening are so extended as to reach the opening a when the inner case is in posit-ion, so that the same door which answers for one casing will answer for both.

To the bottom of the casing A is fastened, by bolts and nuts I) b, a hollow circular disk, B, of wrought metal, which extends snfiiciently far into the interior 1 of the chamber to afford a supportfor the inner case ing A. e

G is a circular wrought-metal plate, which rests on the top of the inner casing A, being flanged at c c, and secured in the usual manner.

Thisplate O has, also, numerous perforations c c, and is provided with a solid center, 0, to which is secured an upright rod, 0*.

On this rod 0? is placed a hollow cone, D, of wrought metal, having a metal guide-plate, (1, extending across the interior of the same, near its base.

This cone D is so constructed that it moves freely up and down on the rod 0, and is provided with a projecting rim, (1 d, slightly curved.

E is an interior pipe, securely fastened tothe main pipe E, and extending so far below the apex of the cone A, that, when the stove is overturned, the projecting rim (1' d of the cone D shall catch over the same, and prevent the fire from escaping therefrom, g as clearly shown in ii". 6.

Having thus fully described my invention,

\Vhat I claim therein as new, and desire to secure by Letters Patent of the United States, is-

The outer casing A, inner casing A, with its perforations a d, circular disk B, perforated plate 0, with its solid center 0 and upright rod 0, hollow cone 1), with its curved projecting rim (1 and interior pipe E, when the whole is so combined and arranged as to form a combustion'chamber for a safety-stove, substantially as described.

In testimony whereof I have signed my name to' R. G. STAPLES, W. W. Penn. 

